LARUCP R-1 Occupancy Plan Review List - ladbs

CITY of Los Angeles
LARUCP R-1 OCCUPANCY PLAN REVIEW LIST
PLAN CHECK NO. PLAN CHECK EXPIRATION DATE: 18 months from submittal date
PCIS# (s): _____________________________ JOB ADDRESS:
APPLICANT TEL. NO. INITIAL VALUATION
SQUARE FOOTAGE USE ZONE FIRE ZONE FLOOD ZONE
OCCUPANCY GROUP TYPE OF CONSTRUCTION NO. OF STORIES
REVIEWED BY: _________________
DATE: ______________ TEL. NO. : __________________
E-MAIL: _______________________@LADBS.LACITY.ORG Website: LADBS.ORG
BUILDING SPRINKLERS THROUGHOUT? 9 YES 9 NO
SPRINKLER USED IN LIEU OF ONE-HOUR CONSTRUCTION? 9 YES 9 NO
SPRINKLER USED FOR AREA INCREASE? 9 YES 9 NO
SPRINKLER USED FOR STORY INCREASE? 9 YES 9 NO
Your application for a permit, together with plans and specifications, has been examined and you are advised that the
issuance of a permit is withheld for the reasons hereinafter set forth. The approval of plans and specifications does not
permit the violation of any section of the Building Code, or other local ordinance or state law.
NOTE: Numbers in parenthesis refer to Code sections of the 2001 edition of the California Building Code, (T=Table),
Plumbing Code (P.C.), Mechanical Code (M.C.) or Fire Code (F.C.). N.D.S. refers to The National Design Specifications.
(*) Corrections used by the City of Los Angeles that may not be used by other municipalities.
Project applicants/representatives are advised to initiate the sign-off processes for the required clearances, listed in
the Clearance Summary Worksheet, as soon as possible. The time to obtain the sign-off from some departments, i.e.,
Department of City Planning, may be time-consuming.
If you cannot comply with the plan check corrections circled under PLANNING & ZONING of this correction sheet,
and instead, wish to obtain a discretionary approval from the Department of City Planning, please initiate the request
for discretionary approval as soon as possible as the process may be time-consuming due to the probable requirement
of a public hearing.
INSTRUCTIONS
! Corrections with circled item numbers apply to this plan check.
! Incorporate all comments as marked on checked set of plans and calculations and this corrections sheet. In the left hand
margin of the circled corrections, please indicate the sheet number and detail or note number on the plans where the
corrections are made. Once all the circled corrections and additional corrections have been addressed, contact the plan
check engineer to schedule a verification appointment to demonstrate compliance with all the corrections.
! Bring the original checked set of plans and calculations along with this correction sheet to the verification appointment.
Do not schedule a verification until all corrections have been addressed.
! Incomplete, indefinite or faded drawings or calculations will not be accepted.
! The plan check engineer will only be available for conference and telephone calls between the hours of and
on the following days:
. Appointments are recommended.
LADBS-Corr.Lst.18 (6/2003)
Page 1 of 23
www.ladbs.org

A. APPLICATION
1. Obtain the building Permit prior to expiration or file an
extension with an additional fee of $ .
2. Valuation is low. It should be $ .
Pay a supplemental plan check fee of $ .
3. Art development fees are applicable to the proposed hotel. ( 107.4.6)
4. Complete the permit application form to show the legal
description, building area, street address, owner, designer,
occupancy group, type of construction, fire zone,
.
5. A separate application and permit(s) is/are required for:
a. Retaining walls
b. Block walls (>3.5')
c. Signs
d. Swimming pools
e. Fire sprinkler systems
f. Each separate structure
g. Electrical work
h. Mechanical work
i. Plumbing work
* j. Grading (Backfill)(Removal/Recompaction)(Site grading)
* k. Shoring
* l. Demolition work
* m. ( )
6. Obtain proof of lot cut date prior to___________
(After 6-1-46 comply to zone minimums.)
(After 7-29-62 obtain Certificate of Compliance
from City Planning.)
7. A recorded affidavit is required for ( ). The
affidavit must be approved by the plan check engineer prior to
recording.
8. Provide copies of the following documents which appear on
this parcel: ( ).
For information on how to obtain copies of affidavits,
please call Building and Safety Records Section, Metro
office (213) 482-6899 or Van Nuys Office (818) 374-4390.
For all other City Planning documents contact the
Department of City Planning at (213) 978-1259, or fax
request to (213) 978-1263. Additional corrections and/ or
Clearances may follow upon review of the documents.
9. Provide a copy of the Certificate of Occupancy and/or
building permit showing the permitted use and required
parking.
10. Show the legal description, building area, occupancy
group(s), use(s), type of construction, number of story(s),
fire zone, lot size, lot area and height on the first sheet or
title sheet of plans.
11. Comply with protection of adjoining property by giving a 30
day written notice (by certified mail) of attached letter to
adjacent property owners, of intent to excavate where
excavation is deeper than the foundation of adjoining building
and located closer to property line than the depth of
excavation.
12. The permit application must be signed by the property owner,
or licensed contractor, or authorized agent at the time the
permit is to be issued:
a. For owner-builder permits: Owner’s signature must be
verified by notarization or personal identification.
b. For contractor building permits: Prior to the issuance
of a building permit, the contractor shall have the following:
I. Certificate of workers Compensation Insurance
made out to the Contractors State License Board.
II. Notarized letter of authorization for agents.
III.Copy of Contractors State License or pocket ID.
* IV. Copy of ( ) City business tax
registration certificate or a newly paid receipt
for one.
13. (Soil)(Foundation)(Geology) report(s) must be approved by
City Grading Section. Provide copy of approved report and
Department approval letter. Show compliance with all the
requirements of the reports and the approval letter conditions.
14. Provide temporary shoring plans for excavations that remove
the lateral support from a public way or an existing building.
Excavations adjacent to a public way require Public Works
approval prior to issuance of building permit.
B. REFERRALS
1. Please see the attached clearance summary worksheet for the
clearance required prior to issuance of building permit.
Project applicants/representatives are advised to
initiate the sign-off processes for these clearances
as soon as possible. The time to obtain the signoff
from some departments, i.e., Department of
City Planning, may be time-consuming. Read
the comments attached to the clearance, if any,
as they often contain important and useful
information.
2. Call ( ) ___________ for information on obtaining the
required clearance for ______________ Specific Plan,
_______________ HPOZ, ______________ CDO, and
_______________ POD. Not all projects can be cleared the
same day and an appointment may be necessary.
LADBS-Corr.Lst.18 (6/2003)
Page 2 of 23
www.ladbs.org

3. Prior to issuance of building permit, obtain approval from:
a). California Division of Occupational Safety and
Health(Cal-OSHA) for (excavations exceeding 5-ft height
where worker descends) (Building over 3-story’s or 35-ft
height). 350 W. 4 th St. Ste 850, Los Angeles, CA
(213)576-7451 or 6150 Van Nuys Bl, Rm 405, Van Nuys,
CA (818)901-5403
b). Los Angeles County Health Department for: (food
establishment)(swimming pool)(potable chemical
toilet)(water well construction/monitoring/destruction)
3530 Wilshire Bl, 9 th floor Los Angeles, CA (213)351-
7352
6851 Lennox Ave, 3 rd floor, Van Nuys, CA (818)902-4470
6053 Bristol Parkway, 2 nd floor, Culver City, CA
(310)665-8483
122 W. 8 th St. Rm 20-A, San Pedro, CA (310)519-6081
Admin HQ: 5050 Commerce Dr., Baldwin Park, CA
(626)430-5560
c). Dept. of Conservation, Division of Oil and Gas (DOG) for
project on land with an abandoned oil well. 5816
Corporate Ave., Room 200, Cypress, CA (714)816-6847.
4. Rough grading approval is required before a building permit
can be issued.
5. Parcel Map/Tract Map _______________ must be recorded
before a permit can be issued. Submit a copy of the recorded
map.
6. Submit a copy of CUP, plot plan number .
7. For energy insulation requirements, see attached sheet.
Submit energy calculations for the shell. The energy
Certificate of Compliance shall be a part of the plans.
D. BEST MANAGEMENT PRACTICES
1. Storm water provisions are required to be shown on the plans
in accordance with the following requirements of exception
14, section 106.4.1.
a. Construction Projects - Small construction sites with less
than two acres of disturbed soil and not located in
designated hillside areas nor in or adjacent to an
environmental sensitive areas shall implement the Best
Management Practices (BMP) identified on attachment
“A” entitled “Minimum Requirements for Construction
Projects/Certification Statement”. In addition, attachment
“A” shall be signed by the owner or an authorize agent of
the owner.
b. Priority Projects - Medium construction sites of two or
more acres and up to, but less than five acres of disturbed
soil shall prepare a local Storm Water Pollution Prevention
Plan (SWPPP). The plans shall show all BMPs necessary
to control and prevent discharge of sediments and other
pollutants generated by the construction activities specific
to each site, see Attachment “B” . Included as part of the
SWPPP, the owner or authorized agent of the owner must
sign the certification statement, attachment “1", and
incorporate attachment “2" into the SWPPP. All sediment
and pollution prevention measures identified on the plans
shall be in place and maintained for the duration of the
project or until no longer deemed necessary by the
responsible City/County inspector.
c. General Construction Permit Projects - Large construction
sites with five acres or more disturbed soil are required to
comply with the State General Permit for Construction
Activity. This permits requires the submittal of a Notice of
Intent to the State Water Resources Control Board and
development of a state Storm Water Pollution Prevention
Plan. The developer is required to show proof of these
submittals.
2. Note: An Wet Weather Erosion Control Plan (WWECP),
utilizing sediment and erosion control BMPs, for projects that
will leave disturb soil during the rainy season (October 1 to
April 15) is required. The WWECP must be prepared, for
projects that have already broken ground, not less than 30
days priors to the beginning of each rainy season during which
soil will be disturbed, and implemented throughout the entire
rainy season. A copy of the WWECP shall be kept on the
project site at all times beginning 30 days prior to the start of
the rainy season through the end of the rainy season. For
projects that will begin construction during the rainy season,
the WWECP must be available 30 days before construction
commences. The WWECP must be submitted to the Bureau of
Engineering, Public Works for review and approval. The
WWECP is not a requirement for the issuance of a building or
grading permit.
D. SITE PLAN
1. The address of the building and the name and address of the
owner and designer are required on the first sheet of the plans.
2. Provide fully dimensioned plot plan to scale, in ink, or copied
to the application plot plan sheet provided. Show building
lines, easements, lot size, zone boundaries, highway
dedication lines, street center line, alley, parking spaces, area
separation walls, and location of all buildings. (Show type of
construction, number of stories and use of all buildings.)
Must agree with plot plan shown on plans. (106.3.2.1)
3. Building projections into public properties must comply with
Chapter 32.
4. Note on the plans: "Temporary pedestrian protection shall be
provided as required by Section 303.7
5. Show on site plans finish floor, natural and grade elevations.
LADBS-Corr.Lst.18 (6/2003)
Page 3 of 23
www.ladbs.org

6. Show location and distance of active and abandoned oil wells
with respect to building perimeter.
E. *PLANNING & ZONING
If you cannot comply with circled corrections in this
section, and instead, wish to obtain a discretionary
approval from the Department of City Planning,
please initiate the request for discretionary approval
as soon as possible as the process may be timeconsuming
due to the probable requirement of a
public hearing.
1. Number of dwelling units is excessive for lot area in the
( ) Zone.
2. A basement containing habitable rooms is considered a story
for side yard, rear yard and number of stories.
12.21C1(l), 12.21.1A8.
3. Yards- Provide and dimension: ____________ front yard;
____________ side yard; ___________ rear yard.
4. Building exceeds (45' height) (3 times buildable area) limit(s)
of Height District #1. Not limited as to number of stories.
12.21.1.
5. Provide ( ) paved parking spaces. A minimum of 1 space
per unit shall be standard stall. 12.21A4, 5.
6. Maximum driveway slope is 20%. Grade details and
transition slopes are required where slope exceeds 12½%.
Maximum driveway cross slope is 10%. Maximum slope
within parking area is 5%. 12.21A5(g).
7. Parking is not permitted in the required front yard, and 5'
side yard along the side street lot line of a corner lot.
12.21A6(a).
8. Automobiles are not permitted to back onto a public street or
sidewalk. 12.21A5(i)1.
9. Provide parking design per the attached Building Department
Standards. Plans shall be drawn to an appropriate scale
(suggest 1/8"=1') and be fully dimensioned to show aisle
widths (including Fig 3 circulation driveway), stall widths
(including increases for obstructions and end aisle stalls).
12.21A5
10. Walls - Parking and turning areas within 15' of a property line
must be enclosed by a 5'-9" high wall*. A 3' high wall* is
required where within 15' of the sidewalk. 12.21A6(d), (e),(f).
*A concrete or masonry construction is required for parking
areas.
11. Maintain minimum 10'(20') separation between buildings.
12.21C2(a).
12. Provide a minimum 10'(12') passageway from the street to
each dwelling unit and guest room. 12.21C2(b).
13. Maximum eave projection of ( ) inches allowed in
( ). 12.22C20(b).
14. Projection of ( ) into the
( ) yard/passageway
(not permitted) (limited to
). 12.22C2.
15. (Fences) (Planters) (Retaining walls) shall not exceed a height
of ( ) ft. above the natural ground level in required
( ) yard. 12.22C20(f).
16. Provide 30" minimum clear access around main building(s)
and accessory living quarters. 12.22C20(l).
17. Comply with the provisions of Specific Plan (
).
18. Zoning Information File No. ( ) requires that
___________________________________________________
___________________________________________________
____________________________________________________
19. For hotels and motels, provide a 400 sq ft loading zone with
a 20' minimum length along the alley. 12.21C6(c).
20. Provide a recycling room or area for 4 or more units.
12.21A19(c).
13. For development of over 5 units, Provide a total minimum
usable open space on site of: 100 sq ft for each unit smaller
than 3 habitable rooms; 125 sq ft for each unit of 3 habitable
rooms; and 175 sq ft for each unit over 3 habitable rooms. (A
kitchen is not counted in this section as a habitable room.)
Sec.12.21G2
a) Common open space shall be open to the sky and have no
structures that project into the open space area and readily
accessible to all residents of the site. Sec. 12.21G2(a)
b) 400 ft 2 -15' min. Common open space shall have a
minimum of 400 sf. with no horizontal dimension less than
15 ft. Sec. 12.21G2(a)(1)(iii)
c) At Grade Level: Common open space shall be located at
grade level or first habitable room level, except for
developments in R3, R4 and/or R5. Sec.12.21G2(a)(1)(iv).
d) Obtain City Planning Approval: 25% of the common
open space to be landscaped according to City Planning
Standards.12.21G2(A)(3).
22. Accessory building is not permitted on front half of lot,
except when located minimum 55-ft from the front line or
private garage located on sloping lot in accordance with
12.21C5(l).
12.21C5(b).
23. Provide minimum 5-ft setback from rear property line ( 10'
from alley center line ) and ( )_setback from side
property line for accessory building containing recreation
room or accessory living quarters. 12.21C5(e), (f), (g)
LADBS-Corr.Lst.18 (6/2003)
Page 4 of 23
www.ladbs.org

24. No mezzanine is permitted within a recreation room.
12.03
PLANS & CALCULATIONS
F. ACCESSIBILITY REQUIREMENTS
1. For the State of California requirements, see separate
correction sheet.
G. SECURITY REQUIREMENTS
Compliance with Chapter 67* is required at door(s) to
individual units, at exterior doors to the main building, at
doors between the R-1 and S-3 occupancies and at all doors to
the Group B/F/M/R/S occupancy.
General:
1. All entry doors to dwelling units or guest rooms shall be arranged
so that the occupant has a view of the area immediately outside
the door without opening the door. Such view may be provided
by a door viewer, through windows located in the vicinity of the
door or through view ports in the door or adjoining wall. (6706)
2.. Screens, barricades, or fences made of material which preclude
human climbing shall be provided at every portion of every roof,
balcony, or similar surface which is within 8 ft. of the utility pole or
similar structures. (6707)
Doors:
3. Wood flush-type doors shall be 1 3/8" thick minimum with solid
core construction. 91.6709.1 - Door stops of in-swinging doors shall
be of one-piece construction with the jamb or joined by rabbet to the
jamb. (6709.4)
4. Every door in a security opening for an apartment house shall be
provided with a light bulb (60 watt min.) At a maximum height of 8
feet on the exterior. (6708)
5. All pin-type door hinges accessible from outside shall have nonremovable
hinge pins. Hinges shall have min. 1/4" dia. steel jamb stud
with 1/4" min. protection. The strike plate for latches and holding
device for projecting dead bolts in wood construction shall be secured
to the jamb and the wall framing with screws no less than 2-1/2" long.
(6709.5, 6709.7)
6. Provide dead bolts with hardened inserts; deadlocking latch with
key-operated locks on exterior. Locks must be openable from inside
without key, special knowledge or special effort (latch not required in
B, F, and S occupancies. (6709.2)
7. Straight dead bolts shall have a min. throw of 1" and an
embedment of not less than 5/8", and a hook-shaped or an
expanding-lug deadbolt shall have a minimum throw of 3/4".
(6709.2)
8. The use of a locking system which consists of a deadlocking latch
operated by a doorknob and a deadbolt operated by a non-removable
thumb turn which is independent of the deadlocking latch and which
must be separately operated, shall not be considered as a system which
requires special knowledge or effort when used in dwelling units. The
door knob and the thumb turn which operates the deadbolt shall not be
separated by more than 8 inches.
9. Wood panel type doors must have panels at least 9/16 in. thick
with shaped portions not less than 1/4 in. thick and individual panels
LADBS-Corr.Lst.18 (6/2003)
Page 5 of 23
must be no more than 300 sq. in. in area. Mullions shall be considered
a part of adjacent panels except mullions not over 18 inches long may
have an overall width of not less than 2 inches. Stiles and rails shall be
of solid lumber in thickness with overall dimensions of not less than
1 3/8 inches and 3 inches in width. (6709.1 item 2 )
10. Sliding doors shall be provided with a device in the upper channel
of the moving panel to prohibit raising and removing of the moving
panel in the closed or partially open position. (6710)
11. Sliding glass doors shall be equipped with locking devices and
shall be so constructed and installed that they remain intact and
engaged when subjected to the tests specified in section 6717.1.
12. Metal or wooden overhead or sliding doors shall be secured with
a cylinder lock, padlock with a min. 9/32" diameter hardened steel
shackle and bolted, hardened steel hasps, metal slide board, bolt or
equivalent device unless secured electrically operated. (6711)
13. Provide metal guides at top and bottom of metal accordion grate
or grille-type doors and cylinder locks or padlocks. Cylinder guards
shall be installed on all cylinder locks whenever the cylinder projects
beyond the face of the door or is otherwise accessible to gripping
tools. (6712)
Glazing:
14. In B, F, M, and S occupancies, panes of glazing with at least one
dimension greater than 5 in. but less than 48 in, shall be constructed
of tempered or approved burglary-resistant material or protected with
metal bars or grilles. (6714)
15. Glazed openings within 40" of the door lock when the door is in
the closed position, shall be fully tempered glass or approved burglary
resistant material, or shall be protected by metal bars, screens or grills
having a maximum opening of 2". The provisions of this section shall
not apply to view ports or windows which do not exceed 2" in their
greatest dimensions. (6713)
Windows:
16. Louvered windows shall be protected by metal bars or grills with
openings that have at least one dimension of 6" or less, which are
constructed to preclude human entry. (6715.3)
17. Other openable windows shall be provided with substantial
locking devices. In B, F, M and S occupancies, such devices shall be
glide bars, bolts, cross-bars, and/or padlocks with minimum 9/32"
hardened steel shackles and bolted, hardened steel hasps. (6715.2)
18. Sliding windows shall be provided with a device in the upper
channel of the moving panel to prohibit raising and removing of the
moving panel in the closed or partially open position. ( 6715.1)
19. Sliding windows shall be equipped with locking devices and
shall be so constructed and installed that they remain intact and
engaged when subjected to the tests specified in (6717.2)
20. Any release for metal bars, grills, grates or similar devices
constructed to preclude human entry that are installed shall be located
on the inside of the adjacent room and at least 24 inches from the
closest opening through such metal bars, grills, grates or similar
devices that exceeds two inches in any dimension. (6715.4)
Openings other than Doors or Glazed Openings:
21. All other openings must be protected by metal bars or
grilles with openings of not less than 6 inches in one dimension.
(67160
13. Provide security lighting for garage and/or exterior parking
area serving dwelling units or guestrooms and for recreation
room, service rooms accessory to apartment houses, and at
every door in a security opening. Security lighting shall have
a surface illumination of 0.2 foot-candles at the floor level.
www.ladbs.org

(6708, 6305, 12.21A5(k))
H. SOUND REQUIREMENTS BETWEEN UNITS
General
In Group R Occupancies, wall and floor- ceiling assemblies
separating dwelling units or guest rooms from each other and
from public space such as interior corridors and service areas
shall provide airborne sound
insulation for walls, and both airborne and impact sound
insulation for floor-ceiling assemblies. All such separating walls
and floor-ceiling assemblies shall provide an airborne sound
insulation equal to that required to meet a sound transmission
class (STC) f 50 (45 if field tested). All separating floor-ceiling
shall provide impact sound insulation equal to that required to
meet an impact insulation class (IIC) of 50 (45 if field tested)
(1208A.2).
EXCEPTION: Impact sound insulation is not required for floorceiling
assemblies over non-habitable rooms or spaces not
designed to be occupied, such as garages, mechanical rooms or
storage areas.
1. Identify all sound rated partitions on the floor plans.
2. Provide construction details for sound rated wall
assemblies.
3. Provide construction details for sound rated floor-ceiling
assemblies
4. All penetration into sound rated partitions or approved
permanent resilient sealant. ~
5. All rigid conduit, ducts, plumbing pipes, appliance vents
located in sound assemblies shall be isolated from the building
construction by means of resilient sleeves, mounts or minimum
1/4" thick approved resilient material. vents located in sound
assemblies shall be isolated from the building construction by
means of resilient sleeves, mounts or minimum 1/4" thick
approved resilient material
6. An approved permanent, and resilient acoustical sealant
shall be provided along the joint between the floor and the
separation walls. ~ floor-ceiling assemblies shall be sealed,
lined or insulated with
7. Carpets or similar surface material which are part of the
floor-ceiling assembly must be installed and inspected before
the Certificate of Occupancy is issued and may be replaced only
by other floor covering that provides the required impact sound
insulation. (1208A.3)
8. Metal ventilating and conditioned air ducts located in sound
assemblies shall be lined. (Exception: Ducts serving only exit
ways, kitchen cooking facilities, and bathrooms need not be
lined).
9. Mineral fiber insulation shall be installed in joist spaces
whenever a plumbing piping, or duct penetrates a floor-ceiling
assembly or where such unit passes through the plane of the
floor-ceiling assembly from within a wall. The insulation shall be
installed to a point 12" beyond the pipe or duct. This
requirement is not applicable to fire sprinkler pipe, gas line or
electrical conduit. ~
10. Electrical outlet boxes in opposite faces of separation walls
shall be separated horizontally by 24" and note that back and
sides of boxes will be sealed with 1/8" resilient sealant and
backed by a minimum of 2" thick mineral fiber insulation. (TV,
telephone and intercom outlets must be installed in boxes
accordingly.)~
11. The entrance doors to residential units from interior
corridors are required to have a minimum STC rating of 26.
(Laminated 1 3/4" solid-core doors with resilient stops and
gaskets or 18 gauge insulated steel slab doors with
compression seals all around, including thresholds will meet this
requirement). (1208A.2).
12. Wall mounted lavatories and toilets are not permitted on
sound rated partitions. ~
I. AREA AND OCCUPANCY
1. Show on the plans the proposed number of stories, occupancy
group(s), type(s) of construction and area justification for this
structure. Vent shafts and courts do not count as area. The
mezzanine floor area must be included in the area of the story
in which it is located. The basement need not be included in
the total allowable area if it does not exceed the area permitted
for a one-story building. Provide an area breakdown by level.
2. Exterior (court) (bearing) (nonbearing) walls within
feet of property lines must be of hour
construction. (503.2)
3. Provide minimum 30" high parapet on the ( )
exterior walls. (709.4)
4. Openings in exterior (court) walls within feet of
property lines (must be protected with three-fourths-hour fire
assemblies) (not permitted). (503.2)
5. Limit openings to 50% of the area of any exterior wall where
protected openings are required. (503.2.2)
6. The building as shown is a mixed-occupancy building. The
sum of the ratios of the actual area for each separate
occupancy divided by the total allowable area for separate
occupancy must not exceed one. ( 504.3)
7. A property line must be assumed between buildings on the
same property(court walls) to determine wall and opening
protection requirements. ( 503.3)
8. The total floor area must be limited to______ square feet,
including increase of _______ percent for ______________-
foot yards, 100 percent for multistory buildings and doubling
(tripling in one-story buildings) for sprinkler through-out.
(504 & 505)
8. The floor area of the 2 nd floor between area separation walls
shall not exceed 3000 sq. ft., otherwise 1 hour construction
shall be provided. (310.2.2)
9. Unobstructed yards of feet must be maintained on
sides of the building to permit a Percent
floor area increase. (505)
10. Complete and return the attached yard Affidavit as part of the
area justification.
LADBS-Corr.Lst.18 (6/2003)
Page 6 of 23
www.ladbs.org

11. Clearly identify on the plans, provide details for and show
the required opening protection for the following:
a. The 1-hour occupancy separation between the R-1 and
Occupancies.
(302.3,T-3-B)
b. The 3-hour occupancy separation between the R-1 and
S-3 occupancies. (302.3,311.2.2.1,T-3-B)
c. The ____hour area separation wall(s). (504.6)
d. Show location of all area separation walls on plot,
floor, foundation, and roof plans.
12. Show maximum height of the structure on all elevation views.
13. This structure is of type construction. Show on the
plans the required roof, exterior wall
construction, structural frame protection, and floor
construction.
(T-6-A)
14. Ducts through two-hour area separation walls require dampers.
15. Projections beyond the exterior wall must not extend beyond:
a. A point one-third the distance to the property line from an
exterior wall. (503.2.1)
b. A point one-third the distance from an assumed vertical
plane located where fire- resistive protection of openings
is first required due to location on property.
(503.2.1 & 705)
c. A point more than 12" into area when openings are
prohibited. ( 503.2.1)
16. Exterior exit stairways, balconies and ramps must not project
into yards where wall openings are not permitted or must be
protected.
17. Horizontal occupancy separation must be supported with a
structural system having equivalent fire-resistive protection.
(302.2)
18. Vertical occupancy separations must afford a complete
separation and must extend through underfloor and attic areas,
including areas where fire-resistive ceilings are specified.
( 302.2)
19. Provide detail to show that (2) hour area separation
walls will comply with Section 504.6
a. Extend vertically from the foundation to a point 30 inches
above the roof. (504.6.4)
b. Total width of all openings limited to 25 percent of the
wall length in the story under consideration. (504.6.2)
c. All openings to be protected with fire assemblies having a
fire-resistive rating of (1-1/2) (3) hours.
d. Ducts through area separation walls should be avoided. If
allowed duct penetrations should be protected as required
in 713.11.
20. Fire blocking must be provided in accordance with Section
708.2.1 in the following locations:
a. In concealed spaces of stud walls and partitions, including
furred spaces, at the ceiling and floor levels.
b. In concealed spaces of stud walls and partitions, including
furred spaces, at 10-foot intervals along the length of the
wall.
c. At all interconnections between concealed vertical and
horizontal spaces such as occur at soffits, drop ceilings and
covered ceilings.
d. In concealed spaces between stair stringers at the top and
bottom of the run and between studs along and in line with
the run of stairs if the wall under the stairs is unfinished.
e. In openings around vents, pipes, ducts, chimneys,
fireplaces and similar openings which afford a passage for
fire at ceiling and floor levels, with noncombustible
materials.
21. Draft stops must be provided in the following locations:
a. In the attics, mansards, overhangs, false fronts set out from
walls and similar concealed spaces, and in floor-ceiling
assemblies. Draft stops shall be in line with walls
separating individual dwelling units and guest rooms from
each other and from other uses. The separated attic space
cannot exceed 3000 sq. ft and the greatest horizontal
dimension cannot exceed 60 ft. (708.3.1-1.2, 708.3.1.2.1,
1505.7)
b. Show draft-stop construction on the plans. Draft-stopping
materials must not be less than ½-inch gypsum board, 3/8-
inch plywood, 3/8-inch Type 2-M particle board or other
materials approved by the building department. Draftstopping
must be adequately supported. ( 708.3.1.3)
22. Members providing vertical support for concrete or masonry
in upper story require 1-hour fire resistive protection. ( 704.4)
23. Exterior stairs must be constructed of As
specified in Section 602.4. (603.4) (604.4) (605.4) (606.4)
24. No openings other than required exits are permitted in walls
of exit passageways. The passageways must be of
- hour fire-resistive construction. Openings must be
protected with labeled three-fourths-hour fire assemblies.
( 1011.1)
25. An automatic sprinkler system is required in all buildings 3
stories or more in height or containing 5 or more dwelling
units. Note on plan sheet “This building and garage
must be equipped with an automatic fire extinguishing
system.” (904.2.9)
LADBS-Corr.Lst.18 (6/2003)
Page 7 of 23
www.ladbs.org

26. Exceptions to, or reductions in building code requirements
based on the installation of automatic fire extinguishing
system is not allowed when utilizing NFPA-13R type
residential sprinkler system allowed for R- occupancies four
stories or less in height. 904.1.3, 505.3, 506, 508.
27. Envelope ceilings must satisfy the following conditions of
Section 704.2.6
a. Envelope ceilings must not be used to provide fire
protection for beam and girders supporting more
than one floor or roof.
b. Columns must be individually fire protected.
c. The areas of openings for copper, sheet steel and ferrous
plumbing pipes must be limited to 100 square inches in
each 100 square feet of ceiling area. Duct openings
must be protected by approved ceiling fire dampers.
d. Individual electrical outlet boxes must be of steel and
not greater than 16 square inches in area.
28. Combustible materials framed into a fire-resistive wall must
have one half the required wall thickness as end protection.
( 709.2)
29. In fire-resistive exterior wall construction, the fire-resistive
rating must be maintained for such walls passing through attic
areas. ( 709.3)
30. Penetrations in walls requiring protected openings must be fire
stopped with an approved material in accordance with Section
709.6. Space between penetrating materials (described below)
must be designed to prevent the movement of hot flame or
gases.
a. Copper or ferrous pipes or conduits may penetrate the
walls or partitions, provided they are fire stopped.
b. Openings for steel electrical outlet boxes not exceeding
16 square inches are permitted provided openings do not
aggregate more than 100 square inches or 100 square
feet of wall or partitions. Outlet boxes on opposite sides
of walls or partitions must be separated by a horizontal
distance of 24 inches.
c. Where walls are penetrated by the other materials or
where larger openings are required than permitted in (b)
above, they must be qualified by tests conducted in
accordance with Section 703.2.
32. Show the location on the plans.
Class I, II or III standpipe (dry, wet, combination) are
required in this building. Hose size is respectively 2 ½",
1 ½" outlets for the sprinkler system. (904.5.1 thru 5, T-9-A)
33. The Type I parking structure permitted by section 311.2.2 is
a story rather than a basement. This structure is 4 stories in
height and requires sprinklers throughout (904.2.2-5)
.
34. This structure has Atrium(s). Show that the
requirements of Section 402 are satisfied. (402.1 thru 10)
35. All openings in an exterior wall below and within 10 ft.
measured horizontally, of an exterior exit stairway serving
buildings over two stories in height shall be protected by fixed
or self-closing assembly having 3/4 -hr. fire protection rating,.
Openings may be unprotected when two separated exterior
stairways serves an exterior exit balcony. (1006.3.3.3)
36. Pressurized enclosures are required for all exits in buildings
having floors used for human occupancy located more than 75
ft. above the lowest level of Fire Department vehicle access.
(1005.3.3.7)
37. The exit passageway requires hour construction
for walls, floor and ceiling. Walls shall be without openings
except for required exits. Exit openings through enclosing
walls shall be ______ hour rated. (1005.3.4.3, 1005.3.4.4)
J. MEANS OF EGRESS
1. In determinating the occupant load, all portions of a building
shall be presumed to be occupied at the same time except for
accessory use areas that ordinarily are used only by persons
who occupy the main area. ( 1003.2.2.2.1)
2. For areas without fixed seats, the occupant load shall not be
less than the number determined by dividing the floor area
under consideration by the occupant load factor. (Table 10-A)
3. For areas having fixed benches or pews, the occupant load
shall not be less than the number of seats based on one person
for each 18 inches (457 mm) of length of pew or bench.
Where fixed booths are used in dining areas, the occupant
load shall be based on one person for each 24 inches (610
mm) of booth length. Where fixed benches, pews or booths
are curved, the larger radius shall determine the booth length.
(1003.2.2.2.3)
31. Smoke and fire dampers must be installed in the following
locations per Section 713.11:
a. Duct penetrations of area or occupancy separation walls
with ratings of two hours or less.
b. Ducts passing through horizontal exit walls.
c. Ducts penetrating shafts (see exception).
d. Ducts penetrating fire-resistive elements of fire-rated
corridor walls. See exception for steel ducts with no
openings into corridor.
LADBS-Corr.Lst.18 (6/2003)
Page 8 of 23
4. All exit doors serving an occupant load of 10 or more, along
the path of exit travel anywhere in a means of egress system
shall comply with the requirements of Section (1003.3.1)
a. Revolving, sliding and overhead doors shall not be used
as required exit doors. (1003.3.1.2)
www.ladbs.org

. All required exit doors shall be not less than 3 ft. wide
6'-8" high, shall have a clear exit way width of not less
than 32" and shall be capable of opening 90 degrees.
The maximum door leaf width is 4 feet when serving an
occupant load of 10 or more. (1003.3.1.3a) & (1003.3.1.4)
c. Exit doors shall be of the pivoted, balanced or sidehinged
swinging type. (1003.3.1.5)
5. Swing door(s) in the direction of travel. OL>50
(1003.3.1.5)
6. The path of exit travel to and within exits in this building shall
be identified by exit signs conforming to the requirements of
Section 1003.2.8. Exit signs shall be readily visible from any
direction of approach. Exit signs shall be located as necessary
to clearly indicate the direction of egress travel. No point
shall be more than 100 feet (30480 mm) from the nearest
visible sign. (1003.2.8.2)
7. Exit signs shall be internally or externally illuminated. When
the face of an exit sign is illuminated from an external source,
it shall have an intensity of not less than 5 foot candles (54
(Ix)) from either of two electric lamps. Internally illuminated
signs shall provide equivalent luminance and be listed for the
purpose. (1003.2.8.4)
8. The exit signs shall also be connected to an emergency
electrical system provided from storage batteries, unit
equipment or an on-site generator set, and the system shall be
installed in accordance with the Electrical Code. For high-rise
buildings, see Section 403. (1003.2.8.5)
14. Elevators or escalators shall not be used as a required means
of egress component. (1003.2.7)
15. Exit doors shall be openable from the inside without the use
of a key, special knowledge or effort. Flush bolts or surface
bolts are prohibited. “Applies also to exit gates”. The
unlatching of any leaf shall not require more than one
operation. (1003.3.1.8)
16. Show that the exit hardware on the exterior exit doors of this
building satisfies the requirements of Section 1003.3.1.9.
17. Double-acting door must not be used as exits where serving an
occupant load of more than 100 (the door is part of a fire
assembly) (the door is a part of a smoke- and draft-control
assembly) (panic hardware is required or provided).
(1003.3.1.5)
18. Double-acting doors must have a view panel of not less than
200 square inches. (1003.3.1.5)
19. This structure has ramps. Provide enough details
to show that the width, slope, landings and handrails satisfy
the requirements of section 1003.3.4. (1003.1.3.1.6)
20. Exiting through more than one intervening room is not
permitted for an occupant load of more than 10. (1004.2.2)
21. Post a sign adjacent to the required main exit door with 1"
lettering stating: “ THIS DOOR MUST REMAIN
UNLOCKED DURING BUSINESS HOURS.” Main exit
only. (1003.3.1.8)
9. The power supply for means of egress illumination shall
normally be provided by the premises of electrical supply. In
the event of its failure, illuminator shall be automatically
provided from an emergency system for Group I, Divisions
1.1 and 1.2 Occupancies and for all other occupancies where
the means of egress system serves an occupant load pf 100 or
more. (1003.2.9.2)
10. Exits must have a minimum separation of one half the
maximum overall diagonal of the building or area served
measured in a straight line between exits. (1003.3)
11. All exits must be continuous and terminate in a public way or
exit court leading to a public way. (1001.1)
12. All exterior elevation changes and interior elevation changes
of 12 inches (305 mm) or more along the path of exit travel
shall be made by steps, stairs or stairways conforming with
the requirements of Section 1003.3.3.3 or ramps conforming
with the requirements of Section 1003.3.3.4. (1003.2.6)
13. Interior elevation changes of less than 12 inches (305 mm)
along the path of exit travel serving an occupant load of 10 or
more shall be by ramps conforming with the requirements of
Section 1003.3.4. (1003.2.6)
LADBS-Corr.Lst.18 (6/2003)
Page 9 of 23
22. Plans must indicate the floor or landing on each side of doors
is not more than 1/2 (1) inch lower than the threshold of the
doorway. (1003.3.1.6)
23. When a door opens over a landing, the landing shall have a
length of not less than (36")(44")(60" HCD) and be not more
than ½" below the threshold. 1" is OK if access is not
required.
(1003.3.1.6&7)
24. Doors shall not project more than 7" into the required corridor
width when fully opened, or more than one half into the
required exit when in any position. Provide details showing
compliance. (1003.3.1.7 & 1004.3.3.2)
25. Dead end corridors and exit balconies must not exceed 20 feet.
( 1004.2.6)
26. Details of the stairway are required (1003.3.3)
showing:
a. A maximum 7" rise and minimum 11" run (tread).
(1003.3.3.3)
b. A minimum headroom over the stairs of 6'-8."
(1003.3.3.3)
c. A minimum (36") (44") clear width.
(1003.3.3.2)
www.ladbs.org

d. Handrails at all stairways with two or more risers, on
the open, one or both sides.
e. Handgrip portion of handrail shall not be less than 1 ¼"
nor more than 2" cross-section diam. Dimension having
a smooth surface with no sharp corners. (1003.3.3.6)
f. A handrail height 34" to 38" above the nosing, 1 ½"
clearance to the wall, 2" max. width and ends returned
to the wall. The open side shall have intermediates
rails or balusters spaced 4" maximum.(Less than 4"
clear spacing)
g. Handrails designed for 20 or 50 lbs./ft. lateral load.
(T-16-B)
h. One handrail extending 12" beyond the top and bottom
riser.
i. Stairway framing, footing, connections and bracing.
j. One-hour construction for the enclosed usable space
under the stairs. (1003.3.3.9)
k. A stair width complying with section 1003.2.3 but not
less than 44" for OL > 50, 36" for OL < 50.
(1003.3.3.2)
l. Stairway landing(s) (36") (44"). (1003.3.3.5)
27. Spiral stairways shall not serve as required exit for an area
exceeding 400 sq. ft. (1003.3.3.8.2)
28. Submit drawings for spiral stairway showing compliance
with Section 1003.3.3.8.2.
29. Provide spiral stairway column base connection / footing
detail.
30. Provide sufficient details of the winding stairway to show
compliance with Section 1003.3.3.8.2.
31. For glass handrails and guardrails, without vertical supports,
submit test report from a recognized testing agency showing
that the glass and base connections shown on the plan are
adequate for the required 20 or 50 lbs./ft lateral load.
(T-16-B)
32. The means of egress system shall have a clear height of not
less than 7 feet (2134 mm) measured vertically from the
walking surface to the lowest projection from the ceiling or
overhead structure. (1003.2.3.4)
33. The second story requires two exits. Occupant load > 10.
(1004.2.3.2)
34. Two exits, separated by feet at the floor and/or
roof are required. (1004.2.3.2)
35. A barrier in the exit enclosure is required to prevent
accidental entry into the basement. (1005.3.3.4)
36. Structures four (4) or more stories in height shall have an
approved stairway sign indicating the floor level, terminus of
the top and bottom of the stair and the identification number
of the stair. It shall be located approximately 5 ft. above the
floor landing and be readily visible when the stair doors are
in an open or closed position. (1003.3.3.13, UBC Std. 10-2)
37. Exit enclosure required for all interior public stairways.
Enclosure shall be continuous until egress is provided from
building. (1005.3.3.1a)
a) One required stairway shall extend to the roof of
buildings four or more stories in height. (1003.3.3.11)
b) Stair construction shall comply with T 6-A.
(1005.3.3.2)
c) All openings to be protected by (1) (1 1 / 2 ) - hour self
closing fire assemblies. No openings other than exit
doorways and exterior wall openings are permitted.
(1005.3.3.5)
d) Provide barrier at exit level between upper story and
basement. (1005.3.3.4 )
e) Space under stairway shall not be used for any purpose.
(1005.3.3.6)
f) All exit enclosures four or more stories shall be of two
hour construction. (1005.3.3.2)
38. Show stairway landing details.
a) Landing dimension in the direction of travel must equal
the required width of the stairs. (1003.3.1.7)
2. Swinging doors shall not reduce required landing width
to less than one half. (1003.3.1.7)
3. When door opens over landing, the landing shall have
a length of not less than 44 inches. (1003.3.1.7)
4. Maximum vertical distance between landings is 12 ft.
(1003.3.3.5 )
39. There shall not be enclosed usable space under interior
stairways or ramps in an exit enclosure, and exterior
stairways. The open space under such stairways shall not be
used for any purpose. (1005.3.3.6, 1006.3.3.2)
40. Provide floor-level exit signs in all corridors serving guest
rooms of hotels where exit signs are required by Section
1003.2.8.2. (1007.6.2)
41. Where an exit passageway is used and more than one exit is
required, dead ends shall not exceed 20 feet in length.
(1005.3.4.6)
42. Opening into exit passageways shall be limited to those
necessary for egress from normally occupied spaces.
is not considered as normally occupied space.
Elevators shall not open into an exit passageway.
(1005.3.4.4)
43. Where an exit passageway is used and more than one exit is
required, dead ends shall not exceed 20 feet in length.
(1005.3.4.6)
44. If occupant load is 50 or more, the minimum clear width of
corridor is 44 inches. (1004.3.4.2)
LADBS-Corr.Lst.18 (6/2003)
Page 10 of 23
www.ladbs.org

45. Handrails and doors, when fully opened, shall not reduce the
required corridor width by more than 7 inches. Doors in any
position shall not reduce the required width by more than one
half. The width shall not be reduced by non-structural
projection by more than 1 ½” on either side. (1004.3.4.2)
46. Corridors require 1-hour rated walls and ceiling construction
when occupant load is 10 or more OL$10. Provide details,
properly referenced, at all corridors. (1004.3.4.3.1)
47. Door(s) located in a 1-hour corridor shall be
protected by a 20-minutes tight fitting, self-closing smoke
and draft control door and frame assembly which bears an
approved label followed by the letter “S”. (1004.3.4.3.2.1)
48. Windows in corridor walls shall be protected by fixed glass
of 3/4 hour rating in steel frames. The total area of window
in a corridor shall not exceed 25% of the area of a common
wall with any room. (1004.3.4.3.2.2)
49. Both smoke and fire dampers are required for duct openings
in corridors. (1004.3.4.3.2.3)
50. Provide 36" (42") high guardrail at ( ) with less
than 4" clear spacing between intermediate rails. (509.2.3)
51. Ramp slopes shall not exceed one foot in 8 feet (12 feet)
(1003.2.5)
52. Exterior stairs and exit balconies shall not project into areas
where protected openings are required. (1006.2.1)
53. Parking spaces shall not obstruct required exits. (1001.3)
K. GENERAL REQUIREMENTS
1. Submit structural calculations to justify the adequacy of the
structural system for seismic, wind, dead and live loads.
2. Each sheet of the architectural and structural plans must bear
the signatures, registration number and expiration date of an
architect or engineer registered in the State of California.
3. The ( Soils engineer ) (Geologist) shall review and approve
the detailed plans prior to issuance of any permit.
4. Delete notes and details on sheets that do not
apply.
5. Specifications must be provided for all construction
materials. (106.3.2)
6. Toilet room floors shall have a smooth, hard non-absorbent
surface such as Portland cement, ceramic tile or other
approved material that extends upward onto the walls at
least 5 inches (127 mm). (807.1.1)
7. Walls within 2 feet (610 mm) of the front and sides of urinals
and water closets shall have a smooth, hard non-absorbent
surface of Portland cement, concrete, ceramic tile or other
smooth, hard non-absorbent surface to a height of 4 feet
(1219 mm), and except for structural elements, the materials
used in such walls shall be of a type that is not adversely
affected by moisture. (807.1.2)
8. According to Section 2512, when gypsum is used as a base
for tile or wall panels for tub, shower or water closet
compartment walls, water resistant gypsum backing board
shall be used. Regular gypsum wallboard is permitted under
tile or wall panels in other wall and ceiling areas when
installed in accordance with Table 25-G. Water-resistant
gypsum board shall not be used in the following locations:
a. Over a vapor retarder.
b. In areas subject to continuous high humidity, such as
saunas, steam rooms or gang shower rooms.
c. On ceilings where frame spacing exceeds 12 inches
(305 mm) on center.
9. All shower compartments, regardless of shape, shall have a
minimum finished interior area of not less than 1024 square
inches (0.66 m 2 ) and shall be capable of encompassing a 30
inch (0.76 m) circle. The minimum area and dimensions
shall be maintained to a point 70 inches (1.8 m) above the
shower drain outlet. (P.C. 410.4)
10. Separation is required between food preparation area
(including food storage rooms) and toilet room by a tight
fitting door. (302.6)
11. Each light of safety glazing material installed in hazardous
locations as defined in section 2406.4 shall be identified by
a permanent label that specifies the labeler, and states that
safety glazing material has been utilized in such installations
6. Details of the guardrails at the floor and roof openings,
occupied roofs and balconies or porches more than 30" above
grade are required. Guardrails shall be 42" in height, have
intermediate rails or balusters spaced at 4" maximum and be
designed for 20 or 50 lbs./ft. lateral load. (T-16-b) (509.1)
7. Toilet rooms shall be provided with a fully openable exterior
window with an area not less than 3 square feet (0.279 m 2 ),
or a vertical duct not less than 100 square inches (64,516
mm 2 )in area for the first water closet plus 50 square inches
(32,258 mm 2 ) additional of area for each additional water
closet, or a mechanically operated exhaust system capable of
providing a complete change of air every 15 minutes. Such
mechanically operated exhaust system shall be connected
directly to the outside, and the point of discharge shall be at
least 3 feet (914 mm) from any opening that allows air entry
into occupied portions of the building.
(1202.2.1)
LADBS-Corr.Lst.18 (6/2003)
Page 11 of 23
www.ladbs.org

8. Indicate on plans that interior finish materials applied to wall
and ceilings shall be tested as specified in Section 802. In
addition, provide details showing application in accordance
with Section 803, 804, and Table 8A & 8B.
9. The flame-spread rating of paneling materials on the walls
of the corridor, lobby and exit enclosure must be
class
. Clearly indicate on the plans.
(T-8-B)
10. Clearly indicate on the plans if the skylights are glass or
plastic. Show that the requirements of Chapter 24 or 26 are
satisfied.
11. Glass skylights shall comply with Section 2409. Plastic
skylights shall comply with Section 2603.7.1.
12. Provide veneer details. Show method of anchorage, size and
spacing of anchors. Type of backing to comply with Section
1403.
13. Note on the plans: “A fire alarm system is required for this
structures. Plans for the fire alarm system must be submitted
to the Fire Department for approval prior to installation.”
Required for:
a. Apartment buildings three or more stories in height or
containing more than 15 units.
b. Hotels three or more stories in height, or containing 20
or more guest rooms. (310.14.12.1)
20. Show on the plans the location of the descriptive diagram
indicating the identification patter and location of each
dwelling unit in the apartment house or complex. Required
for 6 or more units.
21. This structure is required to have 3 approved recording
accelerographs. Show the locations on the plans. (Appendix
Chap. 16 Div. II)
22. This building is of Type I construction and requires special
fire and life safety features. Provide complete plans and
specification. (401.3 thru 403,10 & 602)
23. Provide, on the plans, details of the suspended ceiling that
conform to the requirements of the section 2504.
24. Wood structures three and four stories in height suffer
breakage of plumbing pipes due to wood shrinkage. Clearly
indicate on the plans how this problem is going to be
addressed. (PCM 313.2)
25. Provide “36/42" inch high (minimum) protective guardrail for
decks, porches, balconies and raised floors (when more than
30 inches above grade or floor below), and open side(s) of
stair landings. Opening between balusters/ rails shall preclude
passage of 4 inch diameter sphere. (509)
26.Show attic ventilation type, size, and location. The required net
ventilation area ratio is 1/150 of attic area or 1/300 of attic area
if at least half of the vent area is located more than 3 feet above
eave vents with the balance of the required ventilation provided
by the eave vents. Openings shall have 1/4 inch corrosion
resistant metal mesh covering. (1505.3)
27.Show underfloor net ventilation opening size and locations
equal to 1 sq. ft. for each 150 sq. ft. of under floor area.
Openings shall be as close to corners as practicable and shall
provide cross ventilation along the length of at least two
opposite sides. Opening shall have 1/4 inch corrosion resistant
metal mesh covering. (2306.7)
28.Where planter boxes are installed adjacent to wood frame walls
a 2-inch-wide air space shall be provided between the planter
and the wall. Flashings shall be installed when the air space is
less than 6 inches in width. (2306.8)
29.This plan contains
courts. See plan for location.
Call out dimensions of the courts. Provide details of the
proposed wall construction, opening protection and stair
protection. (204, 503.3, T5-A, 1203.4.3, 1006.3.5)
30.For interior courts more than 2 stories in height, the following
is required:
a. Provide access to the bottom for cleaning purposes.
b. Provide a horizontal air intake at the bottom not less than 10
sq. ft. in area. The intake shall be at least 1-hr. construction
and shall be lead to the exterior of the building unless
abutting a yard or public space.
31.This plan contains
shafts. See plans for location.
Provide details of the 1-hr./2-hr. wall construction and on the
door) schedule provide 1-hr./ 1 ½ hr. opening protection.
(711-1, T6-A, 711.4)
32.A vent is required at an elevator shaft extending through more
than two stories. The venting area shall be 3 ½ percent of the
shaft area but no less than 3 sq. ft. per elevator. (3004)
33.Provide notes on Plan Sheet
Stating all the
provisions of Chapter 30 that the elevators in this structure
must satisfy. Reference to Code sections is not acceptable.
34.Rubbish and/or linen chutes and termination rooms shall be
separated from the remaining of the building by a 1-hour
occupancy separation or as required for the shaft enclosure.
(711.5)
35.Openings into trash chutes shall not be located in corridors or
stairways. Separation may be by an intervening vestibule with
all openings protected. (711.5)
36.Sprinkler heads are required in trash and linen chutes extending
through three or more floors. Provide a section view through
the shaft. (904.2.2.2)
LADBS-Corr.Lst.18 (6/2003)
Page 12 of 23
www.ladbs.org

37.The mezzanine(s) on Plan Sheet(s)
does
not/do not satisfy the definition given in Section 214 and 507.
This is a story.
38.Combustible material (wood) in ducts and return air plenums
shall have a flame-spread rating # 50. Clearly note on the
plans. (M.C. 601.4)
39.Required 1-hr. corridors (including the space above the
dropped ceiling) shall not be used as a return air plenum for
circulating air.
(M.C.601.1.1)
40.No mechanical duct penetration are permitted (except for those
serving the exit enclosure) through exit enclosure walls or
ceiling. (1005.3.3.5)
2. Smoke detectors shall be provided as follows: ( 310.9.1.3,4)
a) In new construction smoke detectors shall receive their
primary power source from the building wiring and shall be
equipped with battery back up and low battery signal.
Smoke detectors shall be located in each sleeping room &
hallway or area giving access to a sleeping room, and on
each story and basement for dwellings with more than one
story.
b) In existing construction smoke detectors may be battery
operated, installed in location as specified in a) above. -~
3. Provide smoke detectors at the top of common stairwells
serving two or more tenants. (Health and Safety Code
13113.7)~
41.Smoke and fire dampers are required at duct penetration of area
or occupancy separations walls, horizontal exit walls, fire-rated
shafts, fire-resistive floor-ceiling or roof ceiling assemblies,
and fire-rated corridor walls or ceilings when any extension of
the ducts leads to an opening into the corridor. Show all
dampers on the mechanical plan. (713.11)
42.Note on the plan “ The construction shall not restrict a fivefoot
clear and unobstructed access to any water or power
distribution facilities (Power poles, pull-boxes, transformers,
vaults, pumps, valves, meters, appurtenances, etc.) or to the
location of the hook-up. The construction shall not be within
ten feet of any power lines-whether or not the lines are
located on the property. Failure to comply may cause
construction delays and/or additional expenses.”
43.
44.Walls and floors separating dwelling units in the same building
shall not be less than 1-hour fire resistive construction. Clearly
identify on the plans and provide details showing how fire
resistive rating will be provided.
45.Note on the plan “ All elevator pits shall be equipped with
a drain to prevent the accumulation of water. The water
and other liquids collected in the bottom of an elevator
shaft may not be discharged to the sanitary sewer or
storm drain.” See Plumbing Information Bulletin P/PC
2001-04. Visit LADBS.ORG for a copy of the Information
Bulletin.
L. SPECIAL HAZARDS
1. Glazing in hazardous locations shall be tempered.
(2406.4)
a Ingress and egress doors
b.Panels in sliding or swinging doors
c. Doors and enclosure for hot tub, bathtub, showers (Also
glazing in wall enclosing these compartments within 5' of
standing surface)
1115B.9.8
d.If within 2' of vertical edge of closed door and within 5' of
standing surface
e.In wall enclosing stairway landing
LADBS-Corr.Lst.18 (6/2003)
Page 13 of 23
4. O “Provide an approved spark arrester for the chimney of
a fireplace, stove, or barbecue.” (L.A.M.C. 57.20.25 )~
5. O “Provide an alarm for doors to the dwelling that form a
part of the pool enclosure. The alarm shall sound
continuously for a min. of 30 seconds when the door is
opened It shall automatically reset and be equipped with a
manual means to deactivate (for 15 secs. max.) for a single
opening. The deactivation switch shall be at least 54" above
the floor.” RGA 14-67~
6. O “An approved Seismic gas shutoff valve will be installed
on the fuel gas line on the down stream side of the utility
meter and be rigidly connected to the exterior of the building
or structure containing the fuel gas piping.” (Per Ordinance
171,874-for work over $10,000.)~
7. “Water heater must be strapped to wall.” Sec. 507.3, UPC .
8. Fire lane access is required. The entrance to the dwelling
is more than 150 ft. as measured from the edge of an
improved street or approved fire lane along the normal
entrance roadway or walkway to the front door. Obtain
clearance from the Hydrants and Access Unit of the Fire
Department in 221 N. Figueroa Street, Suite # 1500.
(L.A.M.C. 57.09.03) A fire lane is 20' min. width, 15%max.
Slope and has a std. turn around.
F. RECREATION ROOM (A-3 Occupancy) OL # 300, No
Stage
1. The windows shown are inadequate for the required light and
ventilation. (1203)
2. Assembly room(A-3) must be 1-hour construction. It is located
in a basement or above the first story.
(303.2.2.2, T 5-B)
3. Assembly room must be separated from the usable space below
by 1-hour construction. OL$50. (303.2.2.2)
4. Provide two (2) exits from the assembly room separated by
feet. OL$50. (1004.2.3.2, T 10-A, 1004.2.4)
5. Show that the exit hardware in the doors from the room and
building satisfy Sections 1003.3.1.5, 1003.3.1.8, 1003.3.1.9 and
1007.2.5.
www.ladbs.org

6. Occupant load signs are required in assembly rooms with an
occupant load $50. At all required locations, note on the plans
“Post Occupant Load Sign - Maximum Occupant Load
People”.
(1007.2.6, T 10-A)
N. LAUNDRY ROOM
1. Clothes dryer(s) located in an area that is habitable or
containing fuel burning appliances shall be exhausted to the
outside or to an area which is not habitable and does not
contain other fuel burning appliances (but not beneath the
building or in the attic area). (M.C. 504.3.1.)
2. A 4" clothes dryer moisture exhaust duct is limited to a 14"
length with two elbows from the clothes dryer to the point of
termination. Reduce this length by 2 feet for every elbow in
excess of 2. (M.C. 504.3.2, M.C. 908)
3. Door, window and exhaust openings are not permitted or must
be protected within feet of the property lines.
(T5-A)
4. Show the opening protection for and provide details properly
referenced of the occupancy separation wall required between
the B and R-1/S-3/U-1 occupancies.
(T3-B, 503-3)
6. The following are required:
a. A rated self-closing door between the
garage and
. (302.4, T 3-B)
b. An asphalt floor or concrete floor. (312.5)
c. A garage floor system adequate to support a wheel load of
2000 lbs. (1607.3.3)
d. Minimum headroom of 7'-0". (311.2.3.3)
e. Delete door(s) and openings from garage into sleeping room.
(312.4)
7. S-3 Occupancy garage requires (three-hour) (two-hour)
separation from R-1 Occupancy. Show details. (302.4,
exception 2)
8. Sprinklers required in basement(s) where distance between
access openings exceeds 75'. (904.2.2)
9. U-1 Occupancy garage requires one-hour occupancy
separation from R-1 Occupancy. (302.4)
Show:
a)Specification for one-hour separation wall.
b)All openings to be protected by one-hour fire assemblies.
c)Specifications for l-hour floor-ceiling assembly.
d)Walls, beams, and columns supporting floor above garage
shall be protected with one-hour, fire-resistive construction.
O. GARAGE (S-3 or U-1 Occupancy)
1. A U-1 garage shall not exceed 1000 sq. ft. or one-story in
height except in a mixed occupancy where the floor area shall
not exceed 3000 sq. ft. provided the exterior walls and
openings are protected as required for the major occupancy of
the buildings. (312.2.1, 312.2.2)
2. For the S-3 occupancy, show how the ventilation requirements
of Section 1202.2.7 are satisfied. If a mechanical system is
used, provide plans and show how and where it exhausts to the
outside. (1206)
3. For this garage, the wall and opening protection within
feet of the property line must be
and
respectively. Show how this is achieved.
(T-5-A)
4. Exterior wall openings for a S-3 garage require a ¾-hour
assemblies within 20' (10') from property line or center line of
public way.91.602.3.2, T 5-A .
5. This occupancy requires an automatic fire sprinkler and stand
pipes systems. (311.7, 904.2.2, 904.2.9)
P. TYPE V 1-HOUR CONSTRUCTION
1. Continuous drywall behind all tubs is required unless the walls
are within the unit and non-bearing. Back to back tubs with a
common plumbing wall are impractical in 1-hour buildings.
2. Interior nonload-bearing partitions within individual dwelling
units in apartment houses and guest rooms or suites in hotels
when such dwelling units, guest rooms or suites are separated
from each other and from corridors by not less than 1-hour fireresistive
constructive construction (continuous to the roof) may
be constructed of: (310.2.2)
a. Noncombustible materials (steel studs and drywall) or fireratardant-teated
wood in buildings in any type of construction
or
b. Combustible framing (wood studs) with noncombustible
materials (drywall) applied to the framing in buildings of
Type III or V construction.
3. Continuous drywall is required behind all electrical service
panels, fire hoses and medicine cabinets.
4. Recessed ceiling light fixtures must be boxed around with 5/8"
Type “X” drywall” to maintain the 1-hour ceiling assembly.
LADBS-Corr.Lst.18 (6/2003)
Page 14 of 23
www.ladbs.org

5. All plumbing penetration through walls which required
protected openings (occupancy separation walls, area
separation walls, corridor walls and walls to close to a real or
imaginary property line) are required to be galvanized or cast
iron piping.
6. Plumbing penetration through a horizontal occupancy
separations shall be boxed out and filled with approved safing
material. Insulation is not approved. (709.6.3)
7. Plastic bathroom fans in the ceiling or laundry hookup boxes in
occupancy separation walls are not permitted unless
specifically approved by a recognized testing agency. Provide
a detail showing what is to be done. (710.2.1)
8. Exhaust fans from the bathroom must enter through the wall.
Dampers are required if the ceiling is penetrated. (713.11)
9. Steel beams and columns shall be protected as required for 1-
hour protection.
(704, T7-A)
a. Where ceiling forms the protective membrane for fireresistive
assemblies (occupancy separations and rated
roof/ceiling or floor/ceiling assemblies), the construction
(floor joists) and their supporting horizontal structural
members (beams) need not be individually fire protected
except where such members support directly applied loads
from more than one floor or roof. The required fire
resistance shall not be less than that required for individual
protection of members. (704.2.6)
b. Columns must always be individually protected.
c. Water heater combustion air ducts through 1-hour ceilings
must be in a shaft. Water heater combustion air ducts in
walls and ceiling without penetrating the ceiling are
permitted. (710.2.1)
10.Attic access openings in 1-hour ceiling can be 2 layers of 3/4"
plywood or one layer of 1-5/8" T&G material, self-closing.
11.Plastic electrical boxes are to be clearly identified as approved
for 1-hour construction. (710.2.1, 710.3)
12.Penetration of the 1-hour ceiling by ducts from the FAU and
the stove hood require dampers (use a ductless hood whenever
possible). Attic units (including heat pumps) require dampers
at all ceiling penetrations.
R. ROOF AND ATTICS
1. A fire retardant roof covering is required. Provide a complete
description on the plans. Class A roof covering is required for
all buildings located in Fire Zone 4 or Very High Fire Hazard
Severity Zone. (1503, 1504, 6403.2)
2. Show roof slope(s), drain(s) and overflow drain(s) or scuppers
on the roof plan. Provide a detail of the roof drain and
overflow system.
a. Use Appendix D of the UPC and 3"/hour for a 15 minute
duration to size the drains.
b. The roof drain and overflow drain must be independent lines
to a yard box. (1506.3)
c. Roof drainage is not permitted to flow over public property.
It must be conducted under sidewalk. (1506.5)
d. Overflow scuppers shall have a minimum opening height of
4", a minimum area three times that of the roof drain and
shall be located not more than 2" above the low point of the
roof. (1506.3)
3. The roof slope shown for the roof
is not adequate. A
Slope is required.
(T-15-B-1, B-2)
4. An attic access opening (22" x 30" with 30" headroom above
the opening) is required into each separate attic space.
(1505.1)
5. Roof access to service equipment is required.
(1513, MC 307.5)
6. A stairway to the roof is required in every building four (4) or
more stories in height unless the roof slope over 4 to 12.
(1003.3.3.11)
7. Show that the penthouse satisfy the requirements of section
1511. Aggregate area of penthouses and roof structures is
limited to 33% of the roof area.
8. Attic ventilation of 1/150 of the area of ventilated space
(approximately 10 sq. in. for each 10 sq. ft. of attic area) is
required. (1505.3)
13.Special details at all soffits are required to show the 1-hour
floor/ceiling or roof/ceiling assembly. Soffits are normally
shown on the plans with hash marks or shading.
Q. TRASH ENCLOSURE (when it is covered and defined as
S-1 Occupancy)
1. Provide details for the wall and roof construction enclosing the
bin.
2. An occupancy separation of hours is required
between the trash enclosure and the
. Show
the required wall and ceiling construction and the hour
door rating.
LADBS-Corr.Lst.18 (6/2003)
Page 15 of 23
9. Unprotected openings are prohibited in envelope protection
type ceilings. All duct openings require fire dampers and are
limited in area to 100 sq. in. in any 100 sq. ft. of ceiling. Access
openings require 1-hour fire rated assemblies with closing
devices approved by the Department. (710.2)
S. DWELLING UNITS (R-1 Occupancy)
1. The window area in is insufficient for light and
ventilation. (1203.1 thru 3)
2. A porch over required windows must have a minimum clear
height of 7 feet with the longer side at least 65% open and
unobstructed. (1203.1)
www.ladbs.org

3. For the purpose of providing natural light or ventilation at
exterior openings of buildings, a minimum yard of 3 feet in
width for one and two story building is required. For buildings
more than two stories, the minimum width of the yard shall be
increased to 1 foot for each additional story.
(1203.4.2)
4. For the purposed of providing natural light or ventilation at
exterior openings of buildings, a minimum court of 3 feet in
width is required. Courts having windows opening on opposite
slides shall not be less than 6 feet in width. Courts bounded on
three or more sides by the walls of the buildings shall not be
less than 10 feet in length, unless bounded one end by a public
way or yard. For buildings more than two stories in height, the
court shall be increased 1 foot in width and 2 feet in length for
each additional story. (1203.4.3)
5. A mechanical ventilation system in lieu of openable windows
in the bathroom, toilet room and laundry, which furnishes five
air changes per hour direct to the outside, is required.
(1203.3)
6. One openable window with an openable area of not less than
5.7 sq. ft., minimum clear 24" height and 20" width, and a sill
height not over 44" above the floor is required in all bedrooms
below the fourth story and basement. (310.4)
7. Escape and rescue windows with a finished sill height below
the adjacent ground elevation shall have a window well
complying with Section 310.4. All window wells shall extend
below the window sill height. (1402.5)
8. One habitable room shall have not less than 120 square feet of
floor area. Other habitable rooms, except kitchens, shall contain
at least 70 square feet of floor area. A minimum room area of
sq. ft. is required for the . (310.6.2)
9. Habitable rooms other than a kitchen shall not be less than 7
feet in any dimension. (310.6.3)
10.Show that ceiling height for habitable rooms is 7 ft. 6 in.
Minimum. (310.6.1)
11.Show that ceiling height for kitchens, halls, bathrooms, and
toilet compartment is 7 feet minimum. (310.6.1)
12.Show locations of hard-wired smoke detectors with a battery
back up in each sleeping room and at a point centrally located
in the corridor or area giving access to each sleeping area.
(310.9.1)
13.The inside finished dimensions of the shower and toilet must be
30" min. width and 24" clear space in front of the toilet.
(2904)
14.The wall covering shall be cement plaster, tile or approved
equal, 70" above the drain at the showers or tubs with showers.
Materials other than a structural elements shall be moisture
resistant. Glass enclosure doors and panels must be labeled
Category II. Swing the door outward. Net area of shower
receptor shall be not less than 1024 sq. in. of floor area, and
encompass 30 inch diameter circle.
(807.1.3, 2406.4, 2407, T24-2-A, UBC STD. 24-2)
15.A min 12" sq. access panel to the bathtub trap slip joint
connection is required. Show the location and size on the
plans,. If a solid joint is to be used, clearly state on the plans
and no access panel is required. (P.C. 405.2)
16.Show how the dwelling unit is provided with comfort heating
facilities capable of maintaining a room temperature of 70
degrees F above 3 feet from the floor. (310.11)
17.The type of glass, thickness and method of protection against
impact for glass lights with bottoms 18" or less above the floor
or walking surface must be indicated on the plans.
(2406.4-7)
18.Prefabricated fireplaces are required to be approved by a
recognized agency. Show the make, model and ICBO / UL
number on the plans. (3102.5)
19.Interior wall and ceiling finishes shall be installed in
accordance with section 803. Show flame spread and smoke
density ratings for finish materials.
20.Provide veneer details. Show method of anchorage, size and
spacing of anchors, and type of backing to comply with Chapter
14. (2320.5.3,1403).
21.Glass skylights shall comply with 91.2409. Plastic skylight
shall comply with section 2603.7.1.
22.Architectural projections on ( )limited to ( )
(Not allowed). Must be constructed of ( ).
(3204)
23.Provide 32" wide doors to all interior accessible rooms.
(2306.3).
24.Fire alarm system is required. Submit three copies of system
to Fire Department for approval prior to installation.
(310.10).
25.Courts having required windows opening therein shall not be
less than (3') (6') ( _______ ) in width and (10')
( _____) in length. (1203.4.2).
26. Provide access to the bottom of the court for cleaning
purposes. (1203.4.3).
27. A court more than two stories in height shall be provided
with a horizontal air intake with a minimum area of 10 sq ft.
91.1203.4.3.
LADBS-Corr.Lst.18 (6/2003)
Page 16 of 23
www.ladbs.org

28. ICBO evaluation reports are required for the following
non-structural items; provide report number:~
9 deck coating 9 roofing tile 9 interior finishes
9 sound/thermal insulation 9 hardboard siding
9 fiber cement panel 9 9
29. All openings in floors are required to be enclosed by a shaft
having wall, floor, and ceiling of ________ hour fire
resistive construction.
(601.1, T’ 6-A)
30. Building exceeds allowable height limit of T’5-B for Type
( )construction. (506)
31. Building exceeds allowable height limit of T’5-B for Type
( )construction. (506)
32. Parapet walls not less than (30") ( ) in height
are required at .............................................. (709.4)
33. Rubbish and linen chutes: Provide automatic sprinkler
system at top of chute and in the terminal room. (904.2.2)
34. Sprinklers are required for floor areas over 1500 sq ft.
(904.2.2)
35. Note on the plan "Sprinkler system to be approved by
Plumbing Section prior to installation."
36. “Provide Ultra flush water closets for all new construction.
Existing shower heads and toilets must be ultra flush.”
37. Provide and specify LARR# for an approved graffitiresistant
finish for the first 9 feet of exterior walls.
(6306)
38. Provide and specify LARR # for damp-proofing for all walls
below grade that enclose habitable or non-habitable space.
(1402.4)
*T. FIRE ZONE REQUIREMENT ( LA CITY SPECIFIC)
1. Type V buildings shall comply with (7206.2)
2. Type (IV) (V) building is not permitted in Fire District
No 1. (7204.1).
3. In every building in Fire District Nos. 1 and 2, every story
or basement with a floor surface elevation more than 4 ft
lower than the highest elevation of the floor landing or tread
of any required exit that story shall be sprinklered .
(7203.5.1)
U. FLOOD HAZARD
1. The lot is located in an area subject to flood. An Elevation
Certificate must be filled out for submittal to the inspector
certifying that foundation was built at the required elevation.
2. This project is in the Special Flood Hazard Zone ( ).
Elevate the structure above elevation ( ), or design the
structure for flood proofing.
3. Flood Zone (A, AR VI-30, AO (AF), A1-30 (FW)) require
clearance from the Department of Public Works, NFIP
Coordinator, (213) 847-5210.
4. Note on the plan:
a) “Survey by a licensed surveyor or Civil Engineer
authorized to perform survey work is required to verify
elevation of lowest finished floor.”
b) “Completed (Elevation/Flood Proofing) Certificate
(attached) shall be given to the inspector. If misplaced, the
certificate can be downloaded from the Internet at
http://www.fema.gov/library/elvinst.htm
V. STRUCTURAL REQUIREMENTS
1. Floor dead load must include a 20 psf partition, in addition
to other loads. (1606.2)
2. Exit facilities must be designed for a 100 psf live load.
(T16-A)
3. Garage floors which support private or pleasure-type cars
must be designed per Section 1607.3.3.
4. The following uniform (concentrated, special) loads must be
used in accordance with T16-A & T16-B.
5. Marquees (balconies) must be designed for a 60 psf
live load.
(T16-A)
6. Ceiling joists must be designed for a live load of not less than
10 psf. (T16-B)
7. The live load for which commercial and
industrial floors are designed shall be posted in each room.
Clearly note on the plans and show the design live load on
the structural plans. (1607.3.5, T-16-A )
8. Key or identify all sections and details as to their location on
the plan or elevation views.
9. Structural observation per Section 1702 is required for this
project. The engineer of record shall prepare an inspection
program, including the name(s) of the individuals or firms
who will perform the work. The inspection program shall be
shown on the first sheet of the structural drawings. (See
attached “General Notes for Structural Observation” form)
10. The required snow load for this area is psf.
The tributary live load reduction in section 1607.5 is not
permitted. See Section 1614 for snow load reduction.
(1607.5, T-16-C)
11. For the design wind load in this area, use
q s
= _______psf, exposure B, C or D from Table 16-G
and Cq from Table 16-H. (1620)
LADBS-Corr.Lst.18 (6/2003)
Page 17 of 23
www.ladbs.org

12. Specify the grade and species of framing lumber, treated mud
sills, type and grade of plywood, design strength of concrete,
and glued-laminated timber, ASTM designation of structural
steel shapes and masonry units, mix of mortar and grout, type
of soil and bearing value, and . (106.4.3)
13. Note on plans. "An AITC Certificate of Inspection for all
glued laminated timber shall be submitted to a Building and
Safety Division inspector prior to erection."
14. Submit design and details of manufactured trussed rafters
with a layout plan, complete calculations and connector plate
design.
15. Fabricated wood trusses shall comply with the requirements
of Section 2321.
16. Note or detail lateral support for the top of interior nonbearing
walls when manufactured trusses are used. (1611.5)
17. Specify the size, spacing and direction of rafters.(106.4.3)
18. The _____” x __________ rafters at _________ o.c. over
_____________ exceed the allowable span for __________
grade.
(T 23-IV-R)
19. The size of ridge board, valley or hip members shall not be
less than the cut end depth of the rafter. (2320.12.3)
20. Roof purlins shall not be smaller than the rafter they support.
The maximum span for 2x4 / 2x6 inch roof purlins is 4 / 6 ft.
respectively. For purlin supports provide struts not smaller
than 2x4 inch with an unbraced length not over 8 feet, and
not flatter than 45 from the horizontal, to bearing walls or
partitions. (2320.12.7)
21. Provide designed ridge beams (4 x min.) for open beam
vaulted ceilings when ceiling joists or rafter ties are not
provided.
28. Show size, spacing and direction of floor joists. (106.4.3)
29. Doubled joists are required under parallel bearing partitions.
(2320.8.5)
30. The “ x “ floor joists at ” o.c.
at
exceeds the allowable span for
grade. (T-23-IV-J-1 & J-2)
31. The “x “ floor girder / beam under
exceeds the allowable stress for grade.
(T-4A, N.D.S.)
32. Specify the header size at door, window and other openings
over 4 ft. wide in bearing walls. (2320.11.6)
33. The _____ x______ ‘ header at _____________ exceeds the
allowable stress for _____________ grade. (T 23-4-A N.D.S.)
34. Detail is required for header support at the corner window(s)
at (106.4.3)
35. Studs in bearing walls are limited to 10 feet in height unless
an approved design is submitted.
(T 23-IV-B)
36. Note the use of full length studs (balloon frame) on exterior
walls of rooms with vaulted ceiling. (2320.11.1, T 23 -IV-B)
37. Plywood roof panels shall be bonded with intermediate or
exterior glue and bonded with exterior glue where exposed
to the weather. (2312)
38. For plywood roofs and floors, specify panel index no.
, plywood thickness, grades, nailing schedule
and panel layout Pattern. Note on the plans "Roof
diaphragm nailing to be inspected before covering". Face
grain of plywood shall be Perpendicular to supports. Floor
shall have tongue and groove or blocked panel edges.
Plywood spans shall conform with Table T-23-11-H.
(106.4.3)
22. Ridge / hip / valley members shall be designed as vertical
load carrying members when roof slope is less than 3 :12.
Provide calculations. (2320.12.1)
23. Provide manufactured roof truss profiles, layout plan and
calculations from truss manufacturer. (106.4.3)
39. Justify the roof/floor diaphragm could be considered as
flexible diaphragm.
40. Specify the size, height, and spacing for studs. Studs in
bearing walls are limited to 10 ft. in height unless an
approved design is submitted.
(T-23-IV-B)
24. Show ceiling joist size, spacing, and direction on plans.
(106.4.3)
25. The _______ x _______ ceiling joists at ________” o.c.
over___________________ exceed the allowable span for
________ grade. (T 23-IV-J-3 & J- 4)
26. Rafter ties spaced 4 ft. (max.) on center are required
immediately above ceiling joists which are not parallel to the
rafters. (2320.12.6)
27. Show blocking at ends of rafters and trusses at exterior walls,
and at supports of floor joists. (2320.12.8 & 2320.8.6)
LADBS-Corr.Lst.18 (6/2003)
Page 18 of 23
41. Three- and four-story wood structures require 3x4 or 2x6
studs at16" o.c. max. in bearing partitions below the top
two stories. Submit calculations showing that allowable
stress in compression perpendicular to grain is not exceeded
in the plates at the proposed stud spacing.
(T-23-IV-B)
42. Exterior stairs and balconies must be positively attached to
the structure without the use of toenails or nails in
withdrawal. (2320.13)
www.ladbs.org

43. Light frame construction of unusual shape, size split-level,
or more than 1 story shall be designed to resist lateral
forces. Submit design for lateral forces.
(2320.1)
44. Provide a diaphragm analysis to show diaphragm adequacy.
(1633.2.9)
45. Structural framing not using Conventional Light-Frame
Construction Provisions of Section 2320 requires the plans
and calculations to be signed and sealed by an architect or
civil/structural engineer licensed in the State of California.
(106.4.2)
46. Cross reference all calculations for joists, beams, shear
walls, etc, to framing / floor plans.
(106.4.3)
47. Design and details are required for retaining walls over 4
feet high (top of wall to bottom of footing) or with
surcharge. (106.4.2, 106.4.3)
48. Provide a vertical and longitudinal section through each
glass block wall showing how it is supported at each edge
and reinforced in each direction. Submit lateral
calculations.
a. Glass-block panels in exterior walls shall not exceed
144 sq. ft. of unsupported area or 15 ft. in any
dimension. (2110.5)
b. Every exterior glass-block panel shall be provided with
a min. 3/8 - inch expansion joints at the side and top.
Expansion joints shall be entirely free of mortar and
shall be filled with resilient material. Provide a detail
on the plans. (2110.6)
c. Lateral support shall be provided by panel anchors
spaced not more than 16" o.c. (2110.3)
49. Provide details, properly referenced, of the anchorage
system between the wood roof and floor diaphragms and the
concrete or masonry walls. Minimum design force shall be
280 lb/lf. (1611.4)
50. Provide calculations and details on the plans for the subdiaphragm
and continuous cross-tie system required for all
wood diaphragms providing lateral support to masonry or
concrete walls. (1633.2.9, item 4)
51. Submit structural calculations / design details for
. (106.4.3)
52. The Engineer or Architect of record, shall review and
approve truss design for loads, location, and suitability
for intended use. (106.4.4.1)
53. Allowable values for structural design shall be per the 1999
LABC.
54. Structural calculations and details are required for anchored
masonry or stone veneer that extends more than 5 ft. above
the first floor. (2320.5.3)
55. Veneer supported by wood frame shall not exceed 30'-0"
above ground unless differential movement is considered by
an engineer. (1403.1.2)
56. Show size, type and location of all brace wall panels.
Clearly show required braced wall lines (25 ft. o.c.
maximum for Conventional Light-Frame C construction.)
(2320.5.1)
57. Solid blocking shall be provided at all horizontal joints
occurring in braced wall panels. (2320.11.3)
58. Allowable shear for stucco is (90 plf for seismic) (180 plf
for wind) and for gypsum board (30 plf for seismic) (100
plf for wind).
(T25-I)
59. Stucco and drywall shear walls cannot exceed a height to
length ratio of 1:1. These shear walls are not allowed below
the top level of a multi-story building. (2513.4 & T25-I)
60. Stucco shear walls shall utilize furring, galvanized nails
(having a minimum 11 ga., 1-1/2" long, 7/16" diameter
head, and furred out a min of 1/4") to attach the lath to the
studs. Staples shall not be used.” (T25-I)
61. The maximum allowable shear three-ply plywood resisting
seismic loads is 200 plf. Footnote 6 of T23-II-I-1.
62. Limit height : length of plywood (wood structural panels)
shear walls to 2:1. Provide complete calculations (including
deflection) and details where straps are used at openings to
reduce the effective height of shear walls. (2315.5.7, T23-II-
G)
63. The is inadequate to resist lateral
forces / uplift wind pressure. Show roof floor diaphragm
nailing, wall bracing. shear connections, tie down hardware
and hold-down anchors. Submit lateral design. (1615, 1626)
64. Wood structural panel shear walls shall meet the story drift
limitation of section 1630.10. Conformance shall be
determined by testing or calculations. Calculated deflection
shall be determined according to UBC Standard 23-2
section 23.223 and shall be increased by 25% to account for
inelastic action and repetitive loading. Total vertical
deflection shall be multiplied by the aspect ratio and added
to the horizontal deflection.
(2315.5.7)
65. Lumber and structural wood panel diaphragms shall not be
considered as transmitting lateral forces by rotation except
one story, attached or detached residential garages or similar
non habitable wood structures provided the diaphragm is
not constructed of straight sheathing. (2315.1)
LADBS-Corr.Lst.18 (6/2003)
Page 19 of 23
www.ladbs.org

66. Provide details of the lateral support for the top and bottom
of the interior non-bearing walls. (1611.5)
67. Clearly indicate on the plans all plywood and drywall shear
walls. Provide a complete nailing schedule for each.
68. Provide shear connection details, properly referenced, at the
top and bottom of all shear walls.
69. Specify the size, LARR number and manufacturer of the
shot pins. The max. spacing of shot pings in bearing on
nonbearing wall is / Respectively
indicated on plans. The max. shear value of shot pins is 100
lbs./ft. without supporting calculations for their value in
wood.
70. Nominal shear values for shear walls framed with cold
formed steel studs other than 20 gauge shall be justified by
complete, accurate analysis or tests. (2220.3)
71. If required by structural calculations, show size, location
and embedment length of hold-down anchors on foundation
plan. Note on the plans that hold-down hardware must be
secured in place prior to foundation inspection. (1630.8)
72. Provide referenced calculations showing the overturning
moments in the shear wall segments. (106.4.3)
73. The capacity of hold-down connectors that do not consider
cyclic loading of the product shall be reduced to 75% of the
allowable earthquake load values. (2315.5.6)
74. Note on the plans that hold-down connector bolts into wood
framing require approved plate washers; and hold-downs
shall be tightened just prior to covering the wall framing.
(2315.5.6)
75. Where allowable shear values exceed 350 pounds per foot,
foundation sill plates and all framing members receiving
edge nailing from abutting panels shall be not less than a
single 3 inch nominal or larger member.
(T 23-II-I-1 note 3)
76. Provide an analysis of all tilt-up panels with openings.
Show that the reinforcing in the panels, on each side of the
openings, is adequate.
77. For each of the metal decks provide the manufacturer and
designation, height, complete welding information,
reinforcing and thickness and type of fill. Specify LARR on
the plans.
78. Bracing members and connections in steel braced frames
shall be designed per Seismic Provisions for Structural Steel
Building of AISE Part I, Section 13, 14 or 15.
(Chapter 22 Division IV)
79. Concrete shear walls must be designed based on
requirements of 1921.6.3
80. Concrete shear wall reinforcement shall be terminated with
required development length per Section 1921.6.6.6 beyond
the boundary reinforcing at the vertical and horizontal end
faces of wall sections.
81. Special inspection by a registered deputy inspector is
required for field welding, concrete strength >2500 psi, high
strength bolting, sprayed on fireproofing, high-strength
masonry, high-lift grouting, prestressed concrete and special
moment-resisting concrete frames. Note on the plans.
(1701.5*, & Chapter 19, 21 & 22)
82. Masonry shear walls shall be designed for 1.5 time the
required seismic force. A stress increase of 33% is allowed.
(2107.1.7)
83. The masonry or concrete walls below grade may be
designed to span simply supported between slabs. NOTE
ON THE PLANS: "The perimeter walls are not to be
backfilled until the floor slabs are poured and cured."
84. Where flexible diaphragms, as defined in Section 1630.6,
provide lateral support for walls and partitions of masonry
and concrete. Shall be determined using Formula (33.1).
85. Call out minimum thickness of 3½ inch concrete slab on
grade, reinforcement, and moisture barrier on foundation
plan. (1900.4.4)
86. Call out foundation bolt size and spacing on foundation
plan. The foundation bolts shall be 5/8 inch diameter
embedded at least 7 inches into the concrete or masonry
foundation spaced not more than 6 feet apart.
(1806.6)
87. Foundation sill bolts require steel plate washers of size and
thickness as specified by table 23-II-L. (1806.6.1)
88. Detail (and reference location on foundation plan) typical
foundation sections for: perimeter walls, interior bearing
walls, depressed slabs, foundation common to dwelling and
garage, garage entrance, spread and/or post pads. (106.4.3)
89. Foundations with stem walls shall be reinforced with a
minimum of one No. 4 bar at the top of the wall and one
No. 4 bar at the bottom of the footing. (1806.7.1)
90. Slabs-on-grade with turn-down footings shall be reinforced
with a minimum of one No. 4 bar at the top and one No. 4
bar at the bottom. (1806.7.2)
91. Foundation sections 12/15/ 18 inches wide, 6 / 8 / 10 inches
thick and 12 /18 / 24 inches depth below natural ground
surface or certified fill grade are required. (T 18-I-C)
92. Provide details for stepped footings when slope of top
and/or bottom of footing exceeds 1:10.
(1806.4)
LADBS-Corr.Lst.18 (6/2003)
Page 20 of 23
www.ladbs.org

93. Show minimum 18 inch underfloor clearance from grade to
bottom of floor joists and minimum 12 inch clearance to
bottom of girders. (2306.3)
94. Specify that foundation sills shall be pressure treated, or
foundation grade Redwood. (2306.4)Foundation cripple
walls shall be framed and sheathed per Section 2320.11.5.
A cripple wall over 4 feet in height shall be framed of studs
having the size required for an additional story.
95. Provide a weep screed for stucco at the foundation plate line
a minimum of 4 inches above the earth or 2 inches above
paved areas. (2506.5)
96. Show location of underfloor access crawl hole (18 x 24
inches). (2306.3)
97. Foundation and floor slabs on expansive soil shall conform
as follows, unless approved soil report and GPI indicates
soil is not expansive by the Expansion Index Test method,
or recommends other details: (1804.4)
a. Continuous footings under exterior walls and interior
bearing walls extending below grade 24" and 18"
respectively and below foundation wall crawl hole.
Piles or piers are permitted without interconnected
grade beams to support first floor loads only. Pad
footing located under a reinforced slab within the
confines of a perimeter footing need not be connected
by a grade beam.
b. Four continuos #4 bars, two 4 inches from bottom and
two 4 inches from top of foundation.
c. Floor slab 3½ inches thick over 4-inch thick coarse
aggregate base or plastic moisture barrier membrane (6
mils thick) and reinforced with #3 bars at 24 inches on
center both ways or welded wire mesh with a cross
sectional area of not less than 0.5 square inches per
foot each way.
103. When the roof slope is less than 3 units vertical in 12
units horizontal, members supporting rafters and ceiling
joists such as ridge board, hips and valleys shall be
designed as beams. (2320.12.1)
104. Retaining walls higher than 12 feet (3658 mm), as
measured from the top of the foundation, shall be designed
to resist the additional earth pressure caused by seismic
ground shaking. (1611A6)
105. Provide details and calculations for a brick fireplace and
chimney. Show compliance with. (3102)
106. Cantilevered diaphragms shall not exceed 15% of the
distance between lines of lateral load resisting elements
from which the diaphragm cantilevers. The depth to width
ratio of the cantilevered portion of the diaphragm shall not
be less than 4:1. (2315.1)
107. The principle of diaphragm rotation shall not be permitted
to distribute shear forces to shear walls. (2315.1)
108. For Steel moment frame connection design see attached
“ Steel Frame Design” supplemental correction sheets.
109. The following applies to all shear walls with a shear value
greater than 300 plf. These walls shall be clearly identified
on the plans. Table 23-II-I-1 footnote 3. Provide the
following:
a) 3x foundation sill plates.
b) 3 x studs and blocks between adjacent panels.
c) 1/2" edge distance for plywood boundary nailing..
d) Stagger nails if nail spacing is less than 2" o.c.
e) Square plate washers shall be used with all anchor
bolts. Table 23-II-L
5/8" bolt - 2.5x2.5x1/4 3/4"bolt - 2.75x2.75x5/16
7/8" bolt - 3x3x5/16 1" bolt - 3.5x3.5x3/8
d. Saturate the soil 18 inches deep before placing the
concrete slab.
98. Provide detail for rigid conduit. Due to shrinkage of the
wood framing, provisions must be made to allow movement
of the rigid conduit.
99. Roof nailing must be designed for wind uplift when the
mean roof height exceeds 35 feet. T 23-II-B-2, 2404.3
100. Show full height studs at gable end walls for vaulted
ceiling room(s).
101. Cripple walls exceeding 4' in height shall be framed of
studs having the size required for an additional story.
(2320.11.5)
102. Provide double joists under parallel bearing partitions.
(2320.8.5)
LADBS-Corr.Lst.18 (6/2003)
Page 21 of 23
110. Provide pile ties: Individual pile caps and caissons subject
to seismic forces shall be interconnected by ties in two
directions. Ties shall be capable of resisting, in tension or
compression, a minimum horizontal force equal to 10% of
the larger column load. Design lateral force resisting piles
and caissons for flexure for a length equal to 120% of the
flexural length. (1921.4.2, 1807.2, 1809.5.1.)
111. Provide an ascending slope clearance to building of H/2 or
15' max. ( 1806.5.6, Figure 18-I-1)
112. Earthquake Induced Liquefaction/Landslide Area:
A geotechnical report is required to evaluate the
potential for soil liquefaction and soil strength loss
during earthquake. ( 1804.5)
113. Detail a footing setback of H/3 to the face of slope or as
required by the approved soil report. (1806.5.3, Fig 18-I-1)
www.ladbs.org

114. There is an excavation of a greater depth than are the walls
or foundation of an adjoining building or structure and
located closer to the property line than the depth of the
excavation. The owner shall provide the Department of
Building and Safety with evidence that the adjacent property
owner or owners have been given a 30-day written notice by
certified mail of such intent to make an excavation prior to
the issuance of the permit. This notice shall state the depth
of such excavation and when it will commence. ( 3301.2.1)
115. Add the following material specifications and/or notes to
plans:
9 Soil: Type of soil and bearing value Per T 18-I-A.
9 Plywood diaphragms: Product Standard PS 1-95,
Douglas fir-Larch, Structural I (or CDX).
9 Particle board: ANSI A208.1-1989. Moisture protection
is required.
9 Wood Framing members: Grade and species of all
lumber. “must be grade marked.”
9 Glue Lam Beams: “GLB must be fabricated in LA City
Bldg.. Dept. licenced shop.” Identify grade symbol and
lamination species per T 5-A, ‘91 NDS Supp.
9 “Field Welding to be done by welders must be certified
by the L.A. City Building Department for (structural
steel) (reinforcing steel) (light gage steel). Continuous
inspection by a deputy inspector is required.”~
9 Steel: Structural steel ASTM (A36)(A992), Structural
Pipe ASTM A53 Gd B, Tubing ASTM A 501.
Reinforcing bars ASTM A615.
9 “Shop welds must be performed in a LA City Bldg.
Dept. licenced fabricator’s shop.”~
9 “Concrete: Standard 2500 psi concrete. 3000 psi min
for grade beams and caissons.” (1905.1, 91.1921.2.4.1)
9 “Continuous inspection by a deputy inspector is
required for all concrete designed with f’c greater than
2500psi.”
9 “Lag Bolts: Provide lead hole 40%-70% of threaded
shank dia. and full dia. for smooth shank portion.” ‘97
NDS
9 Masonry: Specify type and f’m of masonry units.
Proportions of mortar and grout mixes. ( 2103, T 21-D)
9 “LA City Bldg. Dept. licensed fabricator is required for
(Glulam beams)(Trusses)(Structural Steel) ( ).”
9 “Continuous inspection by a deputy inspector required
for ( ).”
9 Specify that foundation sills shall be pressure treated,
or foundation grade Redwood. (2306.4).
Douglas-Fir (Group II Lumber ) pressure treated sill
plates shall be used. Engineer shall be notified for
redesign if other species of sill plates are used or
delivered to the site.
9 Only common nails shall be used for all plywood shear
walls and nail guns using “Clipped head” or Sinker
nails are not acceptable.
9 “All bolt holes shall be drilled 1/32 to 1/16"
oversized. 8.1.2.1, ‘ 91 NDS .
LADBS-Corr.Lst.18 (6/2003)
Page 22 of 23
116. Provide LARR number for screws used in plywood
shear walls framed with cold formed steel studs.
Shear values for plywood shear walls framed with
cold formed steel studs other than 20 gauge shall be
justified by complete, accurate analysis or tests.
(T 22-VIII-C, footnote 2, 2220.3)
117. Cantilevered columns resisting seismic forces shall
be designed with a K factor of 2.1 and shall be limited
to a maximum inelastic response displacement, ∆M, of
.025h. (1630.9.2, 1630.10.2)
118. Hold down straps - Include the following in design
and detailing between floors:
a). Design and detail straps installation when used as
hold downs across floor joists. Account for
reduced number of nails across joist.
b).
Determine the allowable load based on the
number of nails thru the strap into the posts
above and below the "Dead Space" between
floors. Specify # of nails required.
c). Design and detail straps so that the minimum nail
spacing will be provided when the strap nailing is
combined with the shear wall edge nailing (i.e.
provide 4x member wherever a strap and shear
wall edge nailing occur or detail strap nailed over
and thru unnailed plywood--show nailing pattern
on plan).
119. Calculate seismic drift, ∆ M = 0.7 R ∆ S , using strength
level forces in accordance with Section 1630.9.2 .
120. Provide separation from property line or adjacent
building(s) in accordance with Section 1633.2.11.
121. The value of R used for design in a specific direction
shall not exceed the lowest value of R for any of the
lateral force resisting systems utilized in that same
direction. (1630.4.4)
122. Provide calculations and details to show that collector
elements, splices, and connections to resisting
elements have the strength to resist the combined
loads resulting from the special seismic load of
Section 1612.4. (1633.2.6)
123. Provide mix design calculation for concrete with f ‘ c $
6000 psi.
124. For concrete columns that are not part of the lateralforce-resisting
system, provide transverse
reinforcement in accordance with Sections 1921.7.2.2
and 1921.4.4.1.
www.ladbs.org

125. A supplemental plan check and permit with the applicable
fees is required for deferred item(s) :
1. Prefabricated stairs including handrails
2. Prefabricated roof and floor trusses
3. Curtain walls
4. Storage Racks
The engineer of record shall review the design of the
deferred item(s) and verify their conformance with the
intent of the original design.
126. Submit structural calculations and connection details
for the structural members that provide support for the
seismic forces generated by elevators. The seismic
forces must be determined in accordance with Section
1632. The calculations and details provided must
show the complete load path from the rail supports to
the building’s lateral-force-resisting system.
ADDITIONAL CORRECTIONS
( SEE PLANS FOR ADDITIONAL COMMENTS)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
LADBS-Corr.Lst.18 (6/2003)
Page 23 of 23
www.ladbs.org